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Fix culling

This commit is contained in:
Nite Luo 2013-12-06 14:59:06 -08:00
parent 439adafbcd
commit 94255a9d52
1 changed files with 18 additions and 14 deletions
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32
cocos/2d/renderer/CCNewSprite.cpp
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@ -7,12 +7,10 @@
//
#include "CCNewSprite.h"
#include "RenderCommand.h"
#include "Renderer.h"
#include "QuadCommand.h"
#include "CCMenuItem.h"
#include "Frustum.h"
#include "CCDirector.h"
#include "QuadCommand.h"
NS_CC_BEGIN
@ -108,35 +106,41 @@ void NewSprite::updateQuadVertices()
void NewSprite::draw(void)
{
// updateQuadVertices();
if(!culling())
{
return;
}
kmMat4 mv;
kmGLGetMatrix(KM_GL_MODELVIEW, &mv);
//TODO implement z order
QuadCommand* renderCommand = QuadCommand::getCommandPool().generateCommand();
renderCommand->init(0, _vertexZ, _texture->getName(), _shaderProgram, _blendFunc, &_quad, 1, mv);
if(!culling())
{
renderCommand->releaseToCommandPool();
return;
}
Renderer::getInstance()->addCommand(renderCommand);
}
bool NewSprite::culling() const
{
Frustum* frustum = Director::getInstance()->getFrustum();
//TODO optimize this transformation, should use parent's transformation instead
AffineTransform worldTM = getNodeToWorldTransform();
//generate aabb
kmVec3 point = {_quad.bl.vertices.x, _quad.bl.vertices.y, _vertexZ};
//
// calculate the Quad based on the Affine Matrix
//
Rect newRect = RectApplyAffineTransform(_rect, worldTM);
kmVec3 point = {newRect.getMinX(), newRect.getMinY(), _vertexZ};
AABB aabb(point,point);
point = {_quad.br.vertices.x, _quad.br.vertices.y, _vertexZ};
point = {newRect.getMaxX(), newRect.getMinY(), _vertexZ};
aabb.expand(point);
point = {_quad.tl.vertices.x, _quad.tl.vertices.y, _vertexZ};
point = {newRect.getMinX(), newRect.getMaxY(), _vertexZ};
aabb.expand(point);
point = {_quad.tr.vertices.x, _quad.tr.vertices.y, _vertexZ};
point = {newRect.getMaxX(), newRect.getMaxY(), _vertexZ};
aabb.expand(point);
return Frustum::IntersectResult::OUTSIDE !=frustum->intersectAABB(aabb);